<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .d1 div:nth-child(n+2) {
            color: blue;
        }

        .d1 div:last-child {
            font-weight: 700;
        }
    </style>
</head>
<body>
<div class="d1">
    <div class="d2">d2-1</div>
    <div class="d2">d2-2</div>
    <div class="d2">d2-2</div>
    <div class="d2">d2-2</div>

</div>
</body>
</html>